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Title: Rational Design of Hierarchically Open-Porous Spherical Hybrid Architectures for Lithium Ion Batteries

Abstract

Controlling the internal microstructure and overall morphology of building blocks used to form hybrid materials is crucial for the realization of deterministically designed architectures with desirable properties. Here, we demonstrate an integrative spray-frozen (SF) assembly for forming hierarchically structured open-porous microspheres (hpMSs) composed of Fe 3O 4 and reduced graphene oxide (rGO). The SF process drives the formation of a radially-aligned microstructure within the sprayed colloidal droplets and also controls the overall microsphere morphology. The Fe 3O 4/rGO hpMSs contain interconnected open-pores and spherical morphology, which, when used as a lithium-ion battery anode, enables then to provide gravimetric and volumetric capacities of 1069.7 mAh g -1 and 686.7 mAh cm -3, much greater than those of samples with similar composition and different morphologies. The hpMSs have good rate and cycling performances, retaining 78.5% from 100 to 1000 mA g -1 and 74.6% over 300 cycles. Using in-situ synchrotron x-ray absorption spectroscopy, the reaction pathway and phase evolution of the hpMSs are monitored observing the very small domain size and highly disordered nature of Fe xO y. Here, the reduced capacity fading relative to other conversion systems is due to the good electrical contact between the pulverized Fe xO y particlesmore » and rGO, the overall structural integrity of the hpMSs, and interconnected openporosity.« less

Authors:
 [1]; ORCiD logo [2];  [3];  [1];  [4];  [5];  [6];  [1]
  1. Sungkyunkwan Univ. (SKKU), Jangangu, Suwon (Korea). School of Chemical Engineering
  2. Sungkyunkwan Univ. (SKKU), Jangangu, Suwon (Korea). School of Chemical Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division
  3. Univ. of Illinois, Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab., Beckman Inst. for Advanced Science and Technology, Dept. of Materials Science and Engineering
  4. Pohang Accelerator Lab., Pohang (Republic of Korea). Beamline Research Division
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division
  6. Univ. of Illinois, Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab., Beckman Inst. for Advanced Science and Technology, Dept. of Materials Science and Engineering
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1485779
Alternate Identifier(s):
OSTI ID: 1488623
Report Number(s):
BNL-209738-2018-JAAM
Journal ID: ISSN 1614-6832
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Name: Advanced Energy Materials; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; hierarchical sphere; radial orientation; nanoarchitecture; porous structure; in-situ analysis

Citation Formats

Yun, Sol, Bak, Seong-Min, Kim, Sanghyeon, Yeon, Jeong Seok, Kim, Min Gyu, Yang, Xiao-Qing, Braun, Paul V., and Park, Ho Seok. Rational Design of Hierarchically Open-Porous Spherical Hybrid Architectures for Lithium Ion Batteries. United States: N. p., 2018. Web. doi:10.1002/aenm.201802816.
Yun, Sol, Bak, Seong-Min, Kim, Sanghyeon, Yeon, Jeong Seok, Kim, Min Gyu, Yang, Xiao-Qing, Braun, Paul V., & Park, Ho Seok. Rational Design of Hierarchically Open-Porous Spherical Hybrid Architectures for Lithium Ion Batteries. United States. doi:10.1002/aenm.201802816.
Yun, Sol, Bak, Seong-Min, Kim, Sanghyeon, Yeon, Jeong Seok, Kim, Min Gyu, Yang, Xiao-Qing, Braun, Paul V., and Park, Ho Seok. Thu . "Rational Design of Hierarchically Open-Porous Spherical Hybrid Architectures for Lithium Ion Batteries". United States. doi:10.1002/aenm.201802816.
@article{osti_1485779,
title = {Rational Design of Hierarchically Open-Porous Spherical Hybrid Architectures for Lithium Ion Batteries},
author = {Yun, Sol and Bak, Seong-Min and Kim, Sanghyeon and Yeon, Jeong Seok and Kim, Min Gyu and Yang, Xiao-Qing and Braun, Paul V. and Park, Ho Seok},
abstractNote = {Controlling the internal microstructure and overall morphology of building blocks used to form hybrid materials is crucial for the realization of deterministically designed architectures with desirable properties. Here, we demonstrate an integrative spray-frozen (SF) assembly for forming hierarchically structured open-porous microspheres (hpMSs) composed of Fe3O4 and reduced graphene oxide (rGO). The SF process drives the formation of a radially-aligned microstructure within the sprayed colloidal droplets and also controls the overall microsphere morphology. The Fe3O4/rGO hpMSs contain interconnected open-pores and spherical morphology, which, when used as a lithium-ion battery anode, enables then to provide gravimetric and volumetric capacities of 1069.7 mAh g-1 and 686.7 mAh cm-3, much greater than those of samples with similar composition and different morphologies. The hpMSs have good rate and cycling performances, retaining 78.5% from 100 to 1000 mA g-1 and 74.6% over 300 cycles. Using in-situ synchrotron x-ray absorption spectroscopy, the reaction pathway and phase evolution of the hpMSs are monitored observing the very small domain size and highly disordered nature of FexOy. Here, the reduced capacity fading relative to other conversion systems is due to the good electrical contact between the pulverized FexOy particles and rGO, the overall structural integrity of the hpMSs, and interconnected openporosity.},
doi = {10.1002/aenm.201802816},
journal = {Advanced Energy Materials},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 20 00:00:00 EST 2018},
month = {Thu Dec 20 00:00:00 EST 2018}
}

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Works referenced in this record:

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